Finding the Fourth Proportional to 56,015.56, 77,298.42 and 30,863.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,015.56 : 77,298.42 = 30,863.08 : x
2. Step 2: Convert to fraction form
   56,015.56/77,298.42 = 30,863.08/x
3. Step 3: Cross multiply
   56,015.56x = 77,298.42 × 30,863.08
4. Step 4: Simplify right side
   56,015.56x = 2,385,667,320.33
5. Step 5: Solve for x
   x = 2,385,667,320.33/56,015.56
6. Step 6: Final answer
   x = 42,589.37